techniques allow us to scrutinize the precise structure and moment-by-moment pattern of activation in the brain.

Neuroimagining  techniques  are different methods used for examine the structure of the brain(structural Imagine), and for studying the functions of the brain parts(functional Imaging),

Explanation:

Example of structural Imaging techniques are;

Computer Axial tomography.

Diffuse optical imaging

Magnetic Resonance Imagine

Examples of Functional imaging are;

Functional Magnetic resonance imaging

Positron Emission  Tomography

Cranial Ultrasound

Magnetoencephalography

The release of low energy radiations, and implants of different metals into the body which may not be effectively screened out is the major concern of these techniques.

fabric is silk wool ext. paper isnt

explanation:

u cant make fabric out of paper cause paper comes from wood while fabric comes from animals